Different working conditions need to choose different types of blow bars, from high manganese steel, martensitic alloy steel to high-chromium iron. These types of blow bar can ensure that the impact crusher always maintains the best operating condition with the best cost performance.
High manganese steel has high impact resistance and excellent wear resistance under strong impact abrasive wear conditions. The high manganese steel hammer hardly breaks, so high manganese steel is suitable for primary crushing applications.
Martensitic alloy steel can achieve a good balance between impact resistance (toughness) and hardness, and is often used in secondary crushing applications that require better impact resistance and hardness, such as quarrying and construction waste recycling.
Compared with martensitic alloy steel, the brittleness (fragility) of high chromium iron determines that it is not suitable for crushing large or super large hard materials. Therefore, high-chromium iron blow bars are the most commonly used type in secondary crushing applications.